Camshaft (Engine Removed From Vehicle); Camshaft And Dual Sprocket Assembly; Location Of Cup Plugs In Oil Galleries; Timing Chain Oil Tab Installation - Dodge D150 1990 Service Manual

Rear wheel drive ram truck
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CAMSHAFT (ENGINE REMOVED FROM VEHICLE)
REMOVAL
The camshaft has a n i n t e g r a l o i l p u m p and distrib-
u t o r drive gear (Fig. 9).
DOUBLE ROLLER CHAIN
SPROCKET
Fig. 9 Camshaft and Dual Sprocket
Assembly
(1) Remove i n t a k e manifold.
(2) Remove t h e cylinder head covers.
(3) Remove the t i m i n g case cover and t i m i n g chain.
(4) Remove rocker a r m and shaft assemblies.
(5) Remove push rods a n d tappets; identify each
p a r t so i t can be installed i n t h e o r i g i n a l location.
(6) Remove distributor a n d l i f t o u t t h e o i l p u m p
and d i s t r i b u t o r drive shaft.
(7) Remove camshaft t h r u s t plate; note location o f
oil t a b (Fig. 10).
Fig. 10 Timing Chain Oil Tab Installation
(8) I n s t a l l a long bolt into front of camshaft to fa-
cilitate removal of the camshaft. Remove camshaft,
being careful not to damage cam b e a r i n g w i t h t h e
cam lobes.
T o r e d u c e i n t e r n a l l e a k a g e a n d h e l p m a i n t a i n
h i g h e r o i l p r e s s u r e a t i d l e , c u p p l u g s h a v e b e e n
p r e s s e d i n t o t h e o i l g a l l e r i e s b e h i n d t h e c a m -
s h a f t t h r u s t p l a t e ( F i g . 11).
Fig. 11 Location of Cup Plugs in Oil Galleries
INSTALLATION
(1) Lubricate camshaft lobes and camshaft bearing
journals and insert t h e camshaft to w i t h i n 5 1 m m (2
inches) of its f i n a l position i n cylinder block.
W h e n e v e r a n e n g i n e h a s b e e n r e b u i l t and/or a
n e w c a m s h a f t and/or n e w t a p p e t s h a v e b e e n i n -
s t a l l e d , a d d o n e p i n t o f M O P A R C r a n k c a s e C o n -
d i t i o n e r , o r e q u i v a l e n t t o e n g i n e
o i l t o a i d i n
b r e a k - i n . T h e o i l m i x t u r e s h o u l d b e l e f t i n e n -
g i n e f o r a m i n i m u m o f 805 k m (500 m i l e s ) , a n d
d r a i n e d a t t h e n e x t n o r m a l o i l c h a n g e .
(2) I n s t a l l Tool C-3509 w i t h tongue back o f distrib-
utor drive gear (Fig. 12).
Fig. 12 Camshaft Holding Tool C-3509 (Installed
Position)
(3) H o l d tool i n position w i t h a d i s t r i b u t o r lock-
plate bolt. This tool w i l l r e s t r i c t camshaft from being
pushed i n too far and prevent k n o c k i n g out the welch

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